Anatomy-based biomechanic shoe sole

ABSTRACT

An anatomy-based biomechanic shoe sole comprises an inner arch supporting segment bulging toward a arched human plantar surface, an outer arch supporting segment bulging toward the arched human plantar surface, and a depressed calcaneus supporting segment formed fitting the arched human plantar surface. The aforesaid supporting segments are respectively arranged at an optimum position that is determined through measurement based on foot anatomy so that the supporting segments are effective to mitigate the pressure borne by a human foot and enhance comfort to the human foot in the perspective of biomechanics.

BACKGROUND OF THE INVENTION

1. Technical Field

The present invention relates to shoe soles and, more particularly, to an anatomy-based biomechanic shoe sole.

2. Description of Related Art

According to the statistics information published by the American Podiatric Medical Association, a person's feet bear a force equal to his/her body weight during walking. The force can increase up to 3 or 4 times during the persons running. For example, the accumulated force brought to a 60-kilogram-weight person's feet through a whole day may be up to 600 to 1,200 tons. If merely a pair of thin foamed shoe soles is used to mitigate the enormous counterforce from the ground, it is inevitable that the feet suffer tiredness and ache. If things continue this way, the person's knees, waist and even spine can be insidiously injured.

To efficiently moderate the pressure that damages the feet, various shoe soles bragged with cushion functions are introduced. These shoe soles typically facilitate abating the pressure acting on and enhancing comfort to feet by providing functions of vibration-absorbing, arch-supporting, and arch-protecting.

For comprehending how people feel comfort and hoe shoes affect comfort, anatomy and biomechanics with respect to human feet have to be discussed. Only by leaning these biomechanic principles and understanding how the feet bear burden during daily life and particular exercises, said comfort can be efficiently improved, so as to meet consumers' needs.

Please refer to FIG. 1, a human foot anatomically involves a complex yet stable structure constructed form 26 irregular bones, 30 synovial joints, and more than 100 ligaments. This structure can be typically divided into three portions, namely the forefoot, the midfoot, and the hindfoot.

Therein, the hindfoot comprises a calcaneus for contacting the ground, and an talus positioned between the calcaneus and a tibia to form an ankle joint. Thereby, the impact caused when the hindfoot contacts the ground is transmitted through the calcaneus to other body portions, especially to the knees. The midfoot is composed of 5 small tarsuses, including a navicular bone, a cuboid bone and 3 sphenoid bones, which are closely linked by ligaments as a foundation of inner and outer arch portions. The function f the arch is to bear and distribute the entire body weight transmitted from the tibia to the foot. Also, the arch adapts the feet to different loads and contacting surfaces.

The forefoot has 19 bones, which are 5 metatarsuses and 14 phalanxes composing toes. While realizing the anatomical structure of the human foot, the inventor of the present invention believes it is a objective worth attempts to provide a shoe sole in accordance with biomechanics as so to efficiently mitigate the load borne by a human foot.

SUMMARY OF THE INVENTION

The present invention has been accomplished under these circumstances in view and it is the main objective of the present invention to provide a shoe sole, especially an anatomy-based biomechanic shoe sole.

To achieve these and other objectives of the present invention, the anatomy-based biomechanic shoe sole comprises an inner arch supporting segment bulging toward a arched human plantar surface, an outer arch supporting segment bulging toward the arched human plantar surface, and a depressed calcaneus supporting segment formed fitting the arched human plantar surface. The aforesaid supporting segments are respectively arranged at an optimum position that is determined through measurement based on foot anatomy so that the supporting segments are effective to mitigate the pressure borne by a human foot and enhance comfort to the human foot in the perspective of biomechanics.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention as well as a preferred mode of use, further objectives and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying drawings, wherein:

FIG. 1 shows anatomical drawings of a human foot;

FIG. 2 is a flat drawing of a shoe sole of the present invention;

FIG. 3 is a sectional drawing taken along Line 3-3 of FIG. 2 to show a transversely sectional shape of a peak of an inner arch supporting segment;

FIG. 4 is a sectional drawing taken along Line 4-4 of FIG. 2 to show a transversely sectional shape of a peak of an outer arch supporting segment; and

FIG. 5 is a sectional drawing taken along Line 5-5 of FIG. 2 to show a transversely sectional shape of a valley of a calcaneus supporting segment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Through the embodiments disclosed in the following description, in company of the drawing, the technical means and characteristics can be understood more clearly.

As can be learned form FIG. 2, a shoe sole body 1 of the present invention effectively supports a plantar surface at an inner arch portion, an outer arch portion and a calcaneus portion of the human plantar surface.

Please refer to FIG. 3, an inner arch supporting segment 11 is provided to support the inner human arch portion. The inner arch supporting segment 11 is extended form a starting point A1, which is a point corresponding to about 14% of an overall length of the shoe sole, to a terminal point A2, which is a point corresponding to about 66.66% of the overall length of the shoe sole. The inner arch supporting segment 11 is bulged toward the arched human plantar surface with a peak A3 positioned corresponding to about 40% of the overall length of the shoe sole.

Please refer to FIG. 4, an outer arch supporting segment 12 is provided to support the outer human arch portion. The outer arch supporting segment 12 is extended form a starting point B1, which is a point corresponding to about 15% of an overall length of the shoe sole, to a terminal point B2, which is a point corresponding to about 46% of the overall length of the shoe sole. The outer arch supporting segment 12 is bulged toward the arched human plantar surface with a peak B3 positioned corresponding to about 27% of the overall length of the shoe sole. Further, the outer arch supporting segment 12 has a bottom edge formed as an inclined surface 121 so as to provide enhanced elasticity to the outer arch supporting segment 12.

Please refer to FIG. 5, a calcaneus supporting segment 13 is provided to support the human calcaneus portion. The calcaneus supporting segment 13 has a valley C positioned corresponding to about 11% of the overall length of the shoe sole and fitting the human plantar surface. It is obvious through the measurements previously discussed, that the inner arch supporting segment 11, outer arch supporting segment 12, and calcaneus supporting segment 13 are respectively arranged at the optimum position that is determined through measurement based on foot anatomy. Only by following this principle, a shoe sole effective to mitigate the pressure borne by a human foot and enhance comfort to the human foot in the perspective of biomechanics can be accomplished.

Although a particular embodiment of the invention has been described in detail for purposes of illustration, it will be understood by one of ordinary skill in the art that numerous variations will be possible to the disclosed embodiments without going outside the scope of the invention as disclosed in the claims. 

1. An anatomy-based biomechanic shoe sole, comprising an inner arch supporting segment bulging toward a arched human plantar surface, an outer arch supporting segment bulging toward the arched human plantar surface, and a depressed calcaneus supporting segment formed fitting the arched human plantar surface.
 2. The shoe sole of claim 1, wherein the inner arch supporting segment is extended form a starting point, which is a point corresponding to about 14% of an overall length of the shoe sole, to a terminal point, which is a point corresponding to about 66.66% of the overall length of the shoe sole, and is bulged toward the arched human plantar surface with a peak positioned corresponding to about 40% of the overall length of the shoe sole.
 3. The shoe sole of claim 1, wherein the outer arch supporting segment has a bottom edge formed as an inclined surface so as to provide enhanced elasticity to the outer arch supporting segment.
 4. The shoe sole of claim 1, wherein the outer arch supporting segment is extended form a starting point, which is a point corresponding to about 15% of an overall length of the shoe sole, to a terminal point, which is a point corresponding to about 46% of the overall length of the shoe sole and is bulged toward the arched human plantar surface with a peak positioned corresponding to about 27% of the overall length of the shoe sole.
 5. The shoe sole of claim 1, wherein the calcaneus supporting segment has a valley positioned corresponding to about 11% of the overall length of the shoe sole and fitting the arched human plantar surface. 